wined3d: Dirtify vertex shader on transformed <-> untransformed transitions.

dlls/wined3d/glsl_shader.c

@@ -7682,6 +7682,12 @@ static void glsl_vertex_pipe_vdecl(struct wined3d_context *context,
 
     context->last_was_rhw = transformed;
 
+    /* If the vertex declaration contains a transformed position attribute,
+     * the draw uses the fixed function vertex pipeline regardless of any
+     * vertex shader set by the application. */
+    if (transformed != wasrhw)
+        context->shader_update_mask |= 1 << WINED3D_SHADER_TYPE_VERTEX;
+
     if (!use_vs(state))
     {
         if (context->last_was_vshader)